Horse reproduction is an inefficient process with less than 50 percent of the mares that are bred each year foaling. A number of newer techniques are available to improve efficiency, but all require attention to detail. Many require competent technical assistance and access to prescription drugs. This fact sheet will address topics related to improving reproduction. These include forced ovulation, estrus control, artificial insemination, cooled shipped semen, frozen semen and embryo transfer.
"TNH1004-Modern Equine Breeding Management," The University of Tennessee Agricultural Extension Service, TNH-1004 2/03 E12-4415-00-011-03, http://trace.tennessee.edu/utk_agexani/23